Our #1 Hot Shot's Secret pick
Top-ranked Oil Additive in our Hot Shot's Secret lineup, scored independently on effectiveness, health, and environmental impact. No paid placements.
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Hot Shot's Secret is a diesel-centric fuel additive brand manufactured by Lubrication Specialties, LLC, founded in Mount Gilead, Ohio. The company specializes in diesel fuel treatments, oil additives, and engine maintenance products designed for both consumer and fleet applications.
The brand's flagship product, Everyday Diesel Treatment (EDT), is consistently the #1 seller in Amazon's Diesel Additives category. The EDT product line centers on a high-concentration 2-EHN (2-ethylhexyl nitrate) cetane improver formulation, combined with proprietary lubricity and cleaning additives the brand markets as "LX4 Lubricity Extreme."
Hot Shot's Secret maintains a strong presence in the diesel truck community — Diesel Place, TDI Club, Ford Powerstroke Nation, and Cummins Diesel Forum threads all feature long-term user follow-up on their products. The brand also sells through Tractor Supply, O'Reilly, and other auto parts retailers alongside its Amazon storefront.
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Hot Shot's Secret
Everyday Diesel Treatment (EDT)As an Amazon Associate I earn from qualifying purchases. Full disclosure
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